241561777 has 2 divisors, whose sum is σ = 241561778. Its totient is φ = 241561776.

The previous prime is 241561751. The next prime is 241561781. The reversal of 241561777 is 777165142.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 241367296 + 194481 = 15536^2 + 441^2 .

It is a cyclic number.

It is not a de Polignac number, because 241561777 - 2¹⁵ = 241529009 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (241561477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120780888 + 120780889.

It is an arithmetic number, because the mean of its divisors is an integer number (120780889).

Almost surely, 2^241561777 is an apocalyptic number.

It is an amenable number.

241561777 is a deficient number, since it is larger than the sum of its proper divisors (1).

241561777 is an equidigital number, since it uses as much as digits as its factorization.

241561777 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82320, while the sum is 40.

The square root of 241561777 is about 15542.2577832180. The cubic root of 241561777 is about 622.7915889036.

The spelling of 241561777 in words is "two hundred forty-one million, five hundred sixty-one thousand, seven hundred seventy-seven".